For passionate DIY enthusiasts, shrink plastic paper is akin to a magical art project. Simply sketch your designs on the shrink plastic sheet, apply heat, and marvel as it shrinks before your eyes! The possibilities are endless – transform your shrinky plastic creations into keychains, zipper pulls, magnets, pins, hair clips, jewelry, miniature artworks, and beyond. Let your creativity soar with this versatile and enjoyable crafting material! What You Get: 20 x Shrink Plastic Films 20 x key chains 100 x open irons Here's a simplified guide on how to use shrink film: 1.Draw, trace, or copy your desired image onto a Shrinky plastic sheet. 2.Cut out your design or punch holes in the plastic as needed. 3.Preheat the oven to 165C / 325F. 4.Place the shrink film in the oven and bake at 165C / 325F for a few minutes. You'll see it initially wrinkle and then flatten into a smaller, thicker piece of plastic. 5.Watch it shrink until it flattens out again, then allow it to cool for a few seconds. 6.Thread a key ring, ball chain, or ear hooks through any holes you've made. 7.Your fantastic shrinky art is complete! If you have made a heat shrink sheet that is not flat, you can try the following methods to fix it: 1.Re-heating with a heat gun: put the uneven heat shrink sheet under the heat gun again to heat it up so that it shrinks and becomes flat again. Pay attention to control the heating time and temperature to avoid overheating and causing damage to the heat-shrinkable sheet. 2.Flattening Tools: Use specially designed flattening tools or flatteners to help flatten heat shrink sheets. These tools can make the surface of the heat shrink sheet smoother and flatter. 3.Reheat Processing: If none of the above methods are able to fix the problem, consider reheating and processing the uneven heat shrink sheet into another shape or size, or combining it with other materials to make it again. 4.Please remember to be safe when handling heat shrink sheets to avoid being harmed by the high temperature of the heat shrink sheets. We hope these methods will help you repair uneven heat shrink sheets and perfect your crafts!